He screwed him up by moving the analog sticks, so that he was looking upward, causing him to throw the sticky grenade up at the roof at the perfect angle for a ricochet in which he became bonded to the grenade (hence sticky grenade) causing him to, a few seconds later, explode.

Really unique approach to the category, and I love the technique for the video imagery. A bit more refinement in the building itself, and I think this would've have really scored high. Still, nice as is - score of 3.